This filter is for UK broadband lines fitting in a standard BT plug socket and splitting the signal into Voice and Data providing a BT socket for a phone and an RJ11 socket for a ADSL modem. This item has been SIN 346 certified by BT. Other info For POTS voice band service the M-ADSL-Filter provides protection from ADSL signals which may impact through non-line or other remote devices (handset fax voice band modem etc) and central office operations. For ADSL signals it also provides protection from the high frequency transient and impedance effect that occur during POTS operations (ringing transients on-hook off-hook transient and so on).
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